It's an MMO version of D&D 3.5 with a ridiculously low level cap (10) set in Eberron. They may have fixed things by now, but I know that a year ago, there was no support for any form of soloing and it was easily possible ot hit max level in a week. I believe there are also no prestige classes available. Hell, I don't know if they even allow you to multi-class, not that multi-classing does a lot of good at low levels.